<?php

final class UE_Session_File implements UE_Session_Interface {
	public function open($savePath, $sessionName){}
	public function read($sid){}
	public function write($sid, $sessData){}
	public function close(){}
	public function destroy($sid){}
	public function gc($maxLifeTime){}
    
	public function start() {		
		if(!isset($_SESSION)) {
			session_start();  // session.auto_start 启用的时候
		}
	}
}